Wiper blade



FIG. 1 is a perspective view of a wiper blade, showing my new design;

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a reduced left side view thereof;

FIG. 5 is a reduced right side view thereof;

FIG. 6 is a reduced top view thereof; and,

FIG. 7 is a reduced bottom view thereof.

The ornamental design for a wiper blade, as shown and described.